daemons, ui, webui: add policy package support

[rdimaio]

For the daemons, test rendering to ensure the include works:

      initContainers:
      - name: install-policy-packages
        # A slim Python image could be used instead, but using the same image as the base image for the main container ensures that the same Python version is used
        image: almalinux:9
        command:
          - /bin/bash
          - -e
          - -c
          - |
            export PYTHONPATH=/opt/policy_packages/:$PYTHONPATH
            if python3 -c "from importlib.metadata import version; assert version('vo_1_policy_package') == '1.4.0'"; then
                echo "module vo_1_policy_package version 1.4.0 is already installed"
            else
                if [[ 'vo_1_policy_package==1.4.0' == git+* ]]; then
                    dnf install --assumeyes git-all
                fi
                dnf install --assumeyes python-pip
                pip install vo_1_policy_package==1.4.0 --target /opt/policy_packages/
            fi
            if python3 -c "from importlib.metadata import version; assert version('vo_2_policy_package') == '0.1.0'"; then
                echo "module vo_2_policy_package version 0.1.0 is already installed"
            else
                if [[ 'git+https://github.com/vo-2/[email protected]' == git+* ]]; then
                    dnf install --assumeyes git-all
                fi
                dnf install --assumeyes python-pip
                pip install git+https://github.com/vo-2/[email protected] --target /opt/policy_packages/
            fi
        volumeMounts:
        - name: policy-package-volume
          mountPath: /opt/policy_packages/
      containers:
        - name: rucio-daemons
          image: "rucio/rucio-daemons:release-34.2.0"
          imagePullPolicy: Always
          volumeMounts:
            - name: proxy-volume
              mountPath: /opt/proxy
            - name: ca-volume
              mountPath: /opt/certs
            - name: config-common
              mountPath: /opt/rucio/etc/conf.d/10_common.json
              subPath: common.json
            - name: config-component
              mountPath: /opt/rucio/etc/conf.d/20_component.json
              subPath: component.json
            - name: policy-package-volume
              mountPath: /opt/policy_packages/
          ports:
            - name: metrics
              containerPort: 8080
              protocol: TCP
          env:
            - name: RUCIO_OVERRIDE_CONFIGS
              value: "/opt/rucio/etc/conf.d/"
            - name: RUCIO_DAEMON
              value: "abacus-account"
            - name: RUCIO_DAEMON_ARGS
              value: "--threads 1"
            - name: PYTHONPATH
              value: /opt/policy_packages/:${PYTHONPATH}
          resources:
            limits:
              cpu: 700m
              memory: 200Mi
            requests:
              cpu: 700m

[rdimaio]

Latest revision: bumped chart versions after #233 was merged

[rdimaio]

Latest revision: rebased from master

[rdimaio]

Latest revision: refactored PVC logic so that it functions in the same way as server, as done in this PR #241

[rdimaio]

Test rendering of daemons via helm template test-release charts/rucio-server -f charts/rucio-server/values.yaml --debug :

---
# Source: rucio-daemons/templates/policy-package-storage.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: test-release-policy-package-volume
spec:
  storageClassName: 
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 100Mi
---
...
# Source: rucio-daemons/templates/abacus-deployment.yaml
...
    spec:
      volumes:
      - name: config-common
        secret:
          secretName: test-release-rucio-daemons.config.common
      - name: config-component
        secret:
          secretName: test-release-rucio-daemons.config.abacus-account
      - name: policy-package-volume
        persistentVolumeClaim:
          claimName: test-release-policy-package-volume
      - name: proxy-volume
        secret:
          secretName: test-release-rucio-x509up
      - name: ca-volume
        secret:
          secretName: test-release-rucio-ca-bundle
            
      initContainers:
      - name: install-policy-packages
        # A slim Python image could be used instead, but using the same image as the base image for the main container ensures that the same Python version is used
        image: almalinux:9
        command:
          - /bin/bash
          - -e
          - -c
          - |
            export PYTHONPATH=/opt/policy_packages/:$PYTHONPATH
            if python3 -c "from importlib.metadata import version; assert version('vo_1_policy_package') == '1.4.0'"; then
                echo "module vo_1_policy_package version 1.4.0 is already installed"
            else
                if [[ 'vo_1_policy_package==1.4.0' == git+* ]]; then
                    dnf install --assumeyes git-all
                fi
                dnf install --assumeyes python-pip
                pip install vo_1_policy_package==1.4.0 --target /opt/policy_packages/
            fi
            if python3 -c "from importlib.metadata import version; assert version('vo_2_policy_package') == '0.1.0'"; then
                echo "module vo_2_policy_package version 0.1.0 is already installed"
            else
                if [[ 'git+https://github.com/vo-2/[email protected]' == git+* ]]; then
                    dnf install --assumeyes git-all
                fi
                dnf install --assumeyes python-pip
                pip install git+https://github.com/vo-2/[email protected] --target /opt/policy_packages/
            fi
        volumeMounts:
        - name: policy-package-volume
          mountPath: /opt/policy_packages/